Mallick, SahanousYildiz, AhmetDe, Uday Chand2024-08-042024-08-0420170219-88781793-6977https://doi.org/10.1142/S0219887817500967https://hdl.handle.net/11616/97739The object of the present paper is to study mixed quasi-Einstein manifolds. Some geometric properties of mixed quasi-Einstein manifolds have been studied. We also discuss M(QE)(4) spacetime with space-matter tensor and some properties related to it. Finally, we construct an example of a mixed quasi-Einstein spacetime.eninfo:eu-repo/semantics/closedAccessQuasi Einstein manifoldsmixed quasi Einstein manifoldsgeneralized quasi-Einstein manifoldsconcurrent vector fieldenergy-momentum tensorperfect fluidEinstein's field equationspace-matter tensorArticle14610.1142/S02198878175009672-s2.0-85015803833Q3WOS:000400886500015Q3